WATA Standard - Procedure for Producing Sodium Hypochlorite Solution

-10-
6. PROCEDURE FOR
PRODUCING SODIUM
HYPOCHLORITE SOLUTION
6.1 PREPARING THE SATURATED BRINE
1
Take a container of any size (but it must not be of metal) and fill it with water.
2
Add large quantities of salt (approximately 400 g of salt per litre of water).
Preferably use refined salt.
3
Shake/mix steadily for 15 minutes to dissolve a maximum of salt.
4
Ensure that salt remains in the bottom of the container. Close and label it.
If no salt remains at the bottom of the container, add more salt and resume
from step number
3
.
The brine so prepared will keep for 5 to 6 months. Do not forget to check whether
salt remains undissolved at the bottom of the container after each use.
6.2 PREPARING THE SOLUTION FOR ELECTROLYSIS
Using the large syringe (50 mL, supplied in the kit), inject 160 mL of saturated
brine for 2 L of water to be electrolysed, then top up your container using clean
water (total volume 2 L).
1 2 3 4
160 mL
160 mL
Saturated
brine
2L
160 mL